Theory of Machine
A body having moment of inertia o:m2 is rotating at 210 RPM and r with another body at rest having I 40 kg m2. The resultant speed after ing will be

100 RPM
80 RPM
90 RPM
data are insufficient

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Theory of Machine
In a steam engine, one method of obtaining the earlier cut-off with a simple slide valve is by increasing the angle of advance of the eccentric while the throw of the eccentric, steam lap and exhaust lap are kept constant. This method will

Cause withdrawing or throttling of steam
Reduce length of effective stroke of piston
Reduce maximum opening of port to steam
All of these

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Theory of Machine
The inversion of a mechanism is

Changing of a higher pair to a lower pair
Obtained by reversing the input and output motion
Obtained by fixing different links in a kinematic chain
Turning its upside down

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